Office 365 Tentant to Tentant Migration Service https://www.duocircle.com/content/office-365-tenant-to-tenant-migration Organizations using Office 365 have the need to undergo Office 365 tenant to tenant migration at the time of mergers and acquisitions or rebranding and divestiture. It involves the migration of mailboxes, instances, OneDrive accounts, and domains from one tenant to another. As no in-built option for source-tenant to target-tenant migration is available today, one has to use a third-party Office 365 migration tool or PowerShell scripts. Office 365 Tentant to Tentant Migration